Parking Distance Control (PDC) is an ultrasonic-based parking assist system that uses sensors mounted on vehicle bumpers to detect obstacles during parking maneuvers. The system alerts the driver through audible and visual signals, reducing the risk of collisions in tight spaces.
WENZHOU WOMA AUTO PARTS CO.,LTD. supplies OEM-grade PDC sensors compatible with VW, BMW, Honda, Toyota/Lexus, Nissan, Buick/Opel, and more — with ISO9001 & CE certification, IP67 waterproof rating, and 12-month warranty for automotive aftermarket and export markets worldwide.
| Question | Answer |
|---|---|
| What is Parking Distance Control (PDC)? | A parking assist system that uses ultrasonic sensors to detect obstacles around the vehicle and alert the driver through beeping sounds and visual indicators. |
| How does PDC work? | Ultrasonic sensors emit sound waves; the echo return time is measured to calculate distance to obstacles; the system generates warnings based on proximity. |
| What are the main components of a PDC system? | Ultrasonic sensors (4–8 units), a control module, a buzzer/speaker, and visual indicators (dashboard display or screen). |
| What is the difference between front and rear PDC? | Rear PDC is standard on most vehicles; front PDC adds detection for low-speed forward maneuvers. Front sensors typically have a shorter range (20–60 cm) than rear sensors (20–150 cm). |
| Which vehicles use PDC? | Most modern passenger vehicles from VW, BMW, Honda, Toyota, Nissan, Buick, and other brands include PDC as standard or optional equipment. |
| How to get a PDC sensor replacement? | No public list price; quoted by vehicle model and OE number. Submit vehicle make, model, and OE number via inquiry form. |
The PDC system operates through a continuous cycle of ultrasonic emission, echo reception, distance calculation, and driver alert — all within milliseconds.
When the driver engages reverse gear (or activates front PDC via button), the control module powers up the ultrasonic sensors.
Each sensor emits a burst of ultrasonic waves at 40–58 kHz, directed outward from the bumper surface.
The sensors listen for reflected echoes; the time between emission and reception is measured by the control module.
The control unit calculates the distance to each obstacle using the time-of-flight formula: distance = (speed of sound × time) / 2.
Audible alerts (beeping) increase in frequency as the vehicle approaches an obstacle; visual indicators on the dashboard show proximity.
The cycle repeats several times per second, providing real-time feedback as the vehicle maneuvers.
Parking Distance Control is an advanced driver assistance system (ADAS) that uses ultrasonic sensors to monitor the space around a vehicle during parking, providing the driver with distance feedback to avoid collisions.
The PDC system was first introduced in the 1990s and has since become a standard feature on most passenger vehicles. The system typically consists of four to eight ultrasonic sensors embedded in the front and/or rear bumpers, a central control module, and output devices (buzzer and display).
When the vehicle is moving at low speed (typically below 15 km/h), the system activates automatically or manually. Each sensor covers a specific zone around the vehicle; overlapping coverage ensures comprehensive obstacle detection. The system distinguishes between stationary objects (walls, poles) and moving objects (pedestrians, other vehicles) through signal processing algorithms. Advanced PDC systems integrate with parking cameras and automated parking functions for enhanced convenience.
While often used interchangeably, "PDC" refers to the complete parking assist system, while "parking sensors" are the individual ultrasonic components within that system.
PDC is the complete system (sensors + control unit + alerts); parking sensors are the physical ultrasonic devices mounted on the bumper.
PDC processes sensor data and generates warnings; parking sensors only emit and receive ultrasonic signals.
PDC systems can include 4, 6, or 8 sensors (rear only or front + rear); parking sensors are individual units with specific OE numbers.
When a sensor fails, the driver replaces the parking sensor; the PDC system may require recalibration after replacement.
PDC systems are vehicle-specific; parking sensors must match the vehicle's OE specifications for correct operation.
The PDC system can be understood as: ultrasonic sensors → control module → warning output (buzzer + display). Each component plays a critical role in system performance.
4–8 units mounted on bumpers; emit and receive ultrasonic waves; IP67 waterproof rating.
Processes sensor signals; calculates distances; determines warning thresholds; interfaces with vehicle CAN bus.
Generates audible warnings with variable frequency — faster beeping as distance decreases.
Dashboard or infotainment screen shows proximity zones, often with color-coded segments (green/yellow/red).
Note: Some PDC systems integrate with rearview cameras and automated parking functions. Sensor colors vary to match vehicle bumpers.
Choose replacement PDC sensors by your vehicle make and model — each sensor is engineered to match OEM specifications for guaranteed compatibility and reliable performance.
Model: WM-3111128 | OE: 95720-1X000
Fits HYUNDAI H-1 02.08-. Standard size, IP67 waterproof, 12-month warranty.
Model: WM-3010753 | OE: 95700-2P100
Fits Kia SORENTO II XM. ISO9001 & CE certified, IP67 rated, 50,000 pcs/month supply.
Model: WM-3110086 | OE: 95720-0Q200
Fits HYUNDAI ix20 11.10-08.15. Neutral packing, 12-month warranty, 3-15 working days lead time.
Model: WM-3110066 | OE: 95720-2S000
Fits Hyundai Tucson IX35 09-13, Kia. Standard size, IP67 waterproof, T/T or Western Union payment.
Model: WM-5611046 | OE: 28438-4GA6C
Fits INFINITI FX, EX. Advanced ultrasonic technology with factory pricing and professional after-sales service.
Model: WM-5610856 | OE: 25994-ENF0E
Fits Infiniti FX 2003/01-2008/12, Q45 III 2001/02-2006/12, QX56 2003/09-2010/12. ISO9001 & CE certified, IP67 waterproof, 50,000 pcs per month supply.
WOMA AUTO PARTS provides OEM-grade PDC sensors with published OE numbers, fitment data, and technical specifications to ensure accurate replacement selection.
| Parameter | Typical Range / Specification |
|---|---|
| Detection Range (Rear) | 20 cm – 150 cm |
| Detection Range (Front) | 20 cm – 60 cm |
| Operating Frequency | 40 – 58 kHz |
| Accuracy | ±1 cm – ±5 cm |
| Supply Voltage | 5 – 30 V DC |
| Output Signal | Analog / Digital / CAN |
| IP Rating | IP67 – IP69K |
| Operating Temperature | -40°C – +85°C |
| Connector Type | 3-pin or 4-pin configuration |
Parking Distance Control systems are widely used across automotive, commercial vehicle, and industrial applications where low-speed obstacle detection is critical.
Optional PDC components — mounting brackets, extension harnesses, color-matched housings, and connector adapters — are available upon request. Browse all products →
Selecting the correct PDC sensor requires matching vehicle make, model, OE number, and sensor position (front/rear) — then confirming with the manufacturer.
Determine your vehicle brand (VW, BMW, Honda, Toyota, Nissan, Buick, etc.) and model year to narrow down compatible sensors.
Check the existing sensor for an OE number (e.g., 5Q0919275 for VW) or consult your vehicle's parts catalog for the correct reference.
Front and rear sensors may have different part numbers; verify whether you need a front or rear sensor for your vehicle.
Sensors are color-matched to bumpers; confirm the housing color or plan for painting after installation.
Confirm detection range, operating frequency, IP rating, and connector type match your vehicle's requirements.
Choose factory-direct suppliers with ISO9001 & CE certification, published warranty terms, and proven export experience.
WENZHOU WOMA AUTO PARTS CO.,LTD. is a factory-direct B2B manufacturer in Wenzhou City, Zhejiang Province, mainland China, specializing in PDC sensors and TPMS sensors with export experience across Europe, Russia, North America, South America, Australia, Southeast Asia, and Africa.
PDC sensors are quoted by vehicle model and OE number — no public list price. Submit your vehicle information and quantity requirements for a factory quotation.
To receive a quotation, provide: vehicle make/model, OE number (if available), target quantity (MOQ 100 pcs), packing preference, and destination country. WOMA AUTO PARTS responds through its inquiry form with detailed specifications and pricing.
Service commitments: ISO9001 & CE certification, 100% factory inspection, 12-month warranty, neutral packing, 3-15 working days lead time, TNT/DHL/UPS delivery, and supply capacity of 50,000 pcs per month.
Submit your vehicle make, model, OE number, and quantity to receive a factory-direct quotation from WENZHOU WOMA AUTO PARTS CO.,LTD.